diff --git a/README.md b/README.md
index 6e9ae53..c242cac 100644
--- a/README.md
+++ b/README.md
@@ -26,6 +26,7 @@ Connect your mail infrastructure to [MISP](https://github.com/MISP/MISP) in orde
 - Remove "[tags]", "Re:" and "Fwd:" from subjects
 - Optionally attach entire mail to event
 - Contains now a fake-smtpd spamtrap which delivers IoCs/mails to MISP
+- Automatically filter out attributes that are on a server side warning list (enforcewarninglist=True)
 
 ## Implementation